ICD-10 Diagnosis Code I46

Cardiac arrest

Diagnosis Code I46

ICD-10: I46
Short Description: Cardiac arrest
Long Description: Cardiac arrest
This is the 2017 version of the ICD-10-CM diagnosis code I46

Code Classification
  • Diseases of the circulatory system
    • Other forms of heart disease (I30-I52)
      • Cardiac arrest (I46)

Information for Patients

Cardiac Arrest

Also called: SCA, Sudden cardiac death

The heart has an internal electrical system that controls the rhythm of the heartbeat. Problems can cause abnormal heart rhythms, called arrhythmias. There are many types of arrhythmia. During an arrhythmia, the heart can beat too fast, too slow, or it can stop beating. Sudden cardiac arrest (SCA) occurs when the heart develops an arrhythmia that causes it to stop beating. This is different than a heart attack, where the heart usually continues to beat but blood flow to the heart is blocked.

There are many possible causes of SCA. They include coronary heart disease, physical stress, and some inherited disorders. Sometimes there is no known cause for the SCA.

Without medical attention, the person will die within a few minutes. People are less likely to die if they have early defibrillation. Defibrillation sends an electric shock to restore the heart rhythm to normal. You should give cardiopulmonary resuscitation (CPR) to a person having SCA until defibrillation can be done.

If you have had an SCA, an implantable cardiac defibrillator (ICD) reduces the chance of dying from a second SCA.

NIH: National Heart, Lung, and Blood Institute

  • Cardiac arrest

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